u-boot/arch/arm/dts/at91sam9x5cm.dtsi

/*
 * at91sam9x5cm.dtsi - Device Tree Include file for AT91SAM9x5 CPU Module
 *
 *  Copyright (C) 2012 Atmel,
 *                2012 Nicolas Ferre <nicolas.ferre@atmel.com>
 *
 * Licensed under GPLv2 or later.
 */

/ {
	memory {
		reg = <0x20000000 0x8000000>;
	};

	clocks {
		slow_xtal {
			clock-frequency = <32768>;
		};

		main_xtal {
			clock-frequency = <12000000>;
		};
	};

	ahb {
		apb {
			pinctrl@fffff400 {
				1wire_cm {
					pinctrl_1wire_cm: 1wire_cm-0 {
						atmel,pins = <AT91_PIOB 18 AT91_PERIPH_GPIO AT91_PINCTRL_MULTI_DRIVE>; /* PB18 multidrive, conflicts with led */
					};
				};
			};

			rtc@fffffeb0 {
				status = "okay";
			};
		};

		nand0: nand@40000000 {
			nand-bus-width = <8>;
			nand-ecc-mode = "hw";
			atmel,has-pmecc;	/* Enable PMECC */
			atmel,pmecc-cap = <2>;
			atmel,pmecc-sector-size = <512>;
			nand-on-flash-bbt;
			status = "okay";

			at91bootstrap@0 {
				label = "at91bootstrap";
				reg = <0x0 0x40000>;
			};

			uboot@40000 {
				label = "u-boot";
				reg = <0x40000 0x80000>;
			};

			ubootenv@c0000 {
				label = "U-Boot Env";
				reg = <0xc0000 0x140000>;
			};

			kernel@200000 {
				label = "kernel";
				reg = <0x200000 0x600000>;
			};

			rootfs@800000 {
				label = "rootfs";
				reg = <0x800000 0x1f800000>;
			};
		};
	};

	leds {
		compatible = "gpio-leds";

		pb18 {
			label = "pb18";
			gpios = <&pioB 18 GPIO_ACTIVE_LOW>;
			linux,default-trigger = "heartbeat";
		};

		pd21 {
			label = "pd21";
			gpios = <&pioD 21 GPIO_ACTIVE_HIGH>;
		};
	};

	1wire_cm {
		compatible = "w1-gpio";
		gpios = <&pioB 18 GPIO_ACTIVE_HIGH>;
		linux,open-drain;
		pinctrl-names = "default";
		pinctrl-0 = <&pinctrl_1wire_cm>;
		status = "okay";
	};

};